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Patents for Charles R. Pratt
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
1,446,062	Feb. 20, 1923	C.R. Pratt	Chuck	metal lathe chucks
1,446,063	Feb. 20, 1923	C.R. Pratt	Chuck	metal lathe chucks
1,446,065	Feb. 20, 1923	C.R. Pratt	Chuck	metal lathe chucks

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